Bio-Kult Boosted is a unique multi-strain live bacteria supplement with the same great 14 strains of live bacteria found in Bio-Kult Advanced but at 4 times the concentration. Bio-Kult Boosted also contains vitamin B12 to support the immune system. Targets the digestive and immune system. Great travel companion (no need to refrigerate). Use alongside antibiotics. Suitable for everyday use as part of a healthy lifestyle. Leading bacteria brand